nice find! and your in luck as i happen to own the very same tool.im an auto mechanic and its an auto mechanic tool that has a o-scope,true Rms dmm,clamp etc.. its used for a # of different things to diagnosing problems from timing issues to checking injector pulse and can be used to scope your amps i used it on mine.just read the manual and you'll understand it better....p.s when i bought mine 3 years ago i paid $3500 for the whole kit